Dinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepin, 8,9,10,11,12,13,14,15-octahydro-4-hydroxy-2,6-di-1-naphthalenyl-, 4-oxide, (11bR)-

Dinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepin, 8,9,10,11,12,13,14,15-octahydro-4-hydroxy-2,6-di-1-naphthalenyl-, 4-oxide, (11bR)-